Answer:
7
Step-by-step explanation:
r = 7
60 = -24 + 12r
<u>+24 +24</u>
84 = 12r
84 ÷ 12 = r
7 = r
Check:
60 = -24 + 12r
-24 + 12(7)
-24 + 84 = 60
-13
42-55=-13
Answer: 23.74625 miles
19/25
Radius is half the diameter of a circle
If the diameter was 6, then the radius is 3